West Mifflin, Pennsylvania Weather
Solstice approaches — longest light. Day 88 of spring. Read this microseason across nine climate regions →
West Mifflin weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Overcast——70°57°—
- TuesdayJun 16Overcast——76°53°+6°
- WednesdayJun 17Light Showers27%0.01″77°55°+1°
- ThursdayJun 18Showers73%0.29″81°62°+4°
- FridayJun 19Drizzle29%—74°56°-7°
- SaturdayJun 20Overcast——73°50°-1°
- SundayJun 21Light Rain29%0.37″59°58°-14°
AQI 31 (Good), driven by PM2.5. AQI down 8 over the last 6 hours (gradual decline). PM2.5 at 5.0 µg/m³ (AQI 28) with a 0.98 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 5.0 µg/m³ (AQI 28) with a 0.98 fine-to-coarse ratio and 6 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.98
- Wind
- light
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 5:49 AM
- Moonset
- 9:06 PM
- In sign
- ♊︎ Gemini
Solstice approaches — longest light
West Mifflin at a glance
- Today vs. normal: 17°F below the seasonal normal for this latitude
- Last frost: April 18 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
15-Day Forecast — West Mifflin
- Mon70°56°3%
- Tue76°53°3%
- Wed77°55°27%
- Thu81°62°73%
- Fri74°56°29%
- Sat73°50°7%
- Sun59°58°29%
- Mon74°56°39%
- Tue73°50°34%
- Wed83°56°20%
- Thu82°62°25%
- Fri82°61°36%
- Sat84°57°40%
- Sun76°60°42%
- Mon93°70°35%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 15, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — West Mifflin
SPC has placed West Mifflin in the General Thunderstorms category for severe thunderstorms day after tomorrow.
- TODAYNONENo severe risk
- TOMORROWNONENo severe risk
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
ZIP codes in West Mifflin
- 15122
- 15123